//*-------------------------------------------------------------------------
//* File Name	:
//*-------------------------------------------------------------------------
//* Author	:  	My Tran Duc
//*				NDtech company
//*-------------------------------------------------------------------------
//* Description	:
//*-------------------------------------------------------------------------
//* Update History :
//*	-  2013.: ver 1.0 ==> Create, ...
//*-------------------------------------------------------------------------

//* Standard Include
#include <stdio.h>
#include <stdlib.h>

#include <iostream>

using namespace std; 

void duplicate (int &a, int &b, int &c) 

{ 

  a*=2; 

  b*=2; 

  c*=2; 

} 

int main () 

{ 

  int x=1, y=3, z=7; 

  duplicate (x, y, z); 

  cout << "x=" << x << ", y=" << y << ", z=" << z << endl; 

  return 0; 

}
